Edimax EW-7478APC 1.04 POST Request /goform/formL2TPSetup L2TPUserName stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k2.55-

Summaryinfo

A vulnerability, which was classified as critical, has been found in Edimax EW-7478APC 1.04. Affected is the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. Performing a manipulation of the argument L2TPUserName results in stack-based overflow. This vulnerability is identified as CVE-2026-13563. The attack can be initiated remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as critical has been found in Edimax EW-7478APC 1.04. This affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. The manipulation of the argument L2TPUserName with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at lavender-bicycle-a5a.notion.site. This vulnerability is uniquely identified as CVE-2026-13563. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known.

The exploit is shared for download at lavender-bicycle-a5a.notion.site. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/28/2026 Advisory disclosed
06/28/2026 +0 days VulDB entry created
06/28/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: lavender-bicycle-a5a.notion.site
Status: Not defined

CVE: CVE-2026-13563 (🔒)
GCVE (CVE): GCVE-0-2026-13563
GCVE (VulDB): GCVE-100-374571
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/28/2026 18:18
Changes: 06/28/2026 18:18 (58)
Complete: 🔍
Submitter: wxhwxhwxh_mie
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #844113: EDIMAX EW-7478APC EW-7478APC 1.04 Buffer Overflow (by wxhwxhwxh_mie)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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